And Florence attends a school for the deaf where she is learning to be an electrician.

I ask her why she wants to be an electrician. Her face lights up with the most incredible smile. She tells me using sign language that she has always wanted to be an electrician. One day, she will bring electricity to her home so they can use sign language at night, and her sister and mother can weave after dark.

"I have to study for three more years," she tells me. And when she says it, I can picture the lights coming on in her home, just as the light has come into so many lives here that no longer need to fear epidemics of meningitis.